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  1. Shrimpfork

    Calculating an orifice opening size - air flow

    Chicopee, I think I follow your post. However, I am unclear on how I am going to calculate the mass of air that is moved in that period of time to suffice the Q variable. Also I am not 100% clear for the values I need to calculate k. Can you help me here? PS: I also found this article that...
  2. Shrimpfork

    Calculating an orifice opening size - air flow

    The pressure we are talking about is not very much. It is in PSF, not PSI. I'm not sure what I'm going to have for charging pressure yet. I am simulating a Mother Nature wind gust and I'll need to cycle between 5 PSF to 25 PSF and back to 5 PSF in a 3 second time period all inside a cavity of...
  3. Shrimpfork

    Calculating an orifice opening size - air flow

    I'm not sure if this is what I am looking for. I don't see if how this will tie into the time to discharge other then the mass flow rate. If so I'm not sure how I get the mass of the air that was moved between this time period of 1.5 seconds.
  4. Shrimpfork

    Calculating an orifice opening size - air flow

    I need some help with this one. It has been a while since I played around with fluid dynamic and differential equations. I have an air tank with a free air volume of 10.7 ft^3. I would like to know what size of an orifice is required to change the pressure in this tank from 5 PSF to 25 PSF...
  5. Shrimpfork

    Components and Cladding with Internal Pressures

    I can agree to all these points. The panel system type I am running calculations for, is a self contained sealed system, where the joints do not allow air movement to pass from the internal panel cavity to the exterior, so there is some pressure differential, however I don't think it is a same...
  6. Shrimpfork

    Components and Cladding with Internal Pressures

    I typically calculate wind loadings on exterior metal wall panels which are considered an element of Components and Cladding. The location of the panels are often attached to the building where the backside of the panels are NOT exposed to the internal pressures. For example, a current design...

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